Automobile clock spring assembly

Abstract

An automobile clock spring assembly comprises a base and a shell, a rotating disc is located in the center of the shell, the outer wall of the rotating disc and the inner wall of the shell are spaced to form a cable moving space, a whole continuous flat cable is spirally wound on the outer wall of the rotating disc in a one-way mode, and the inner end of the flat cable is fixed to the rotating disc and electrically connected with an inner wiring terminal. And the outer end of the flat cable is fixed on the inner wall of the shell and is electrically connected with the external wiring terminal, so that a large-angle-range rotatable structure is formed. According to the utility model, the structure is reasonable and simple, the whole continuous flat cable is spirally wound on the outer wall of the rotating disc in a one-way manner, other auxiliary mechanisms are not needed, the number of parts is small, the occupied space is small, the size is more compact, smooth rotation can be realized without any lubricating grease inside, and the large rotation range of + / -720 degrees can be realized; and electric signals can be reliably transmitted in various repeated rotation processes.

Description

Technical Field

[0001] The utility model relates to a clock spring product, in particular to a clock spring assembly for automobiles. Background Art

[0002] A clock spring is generally installed under an automobile steering wheel for transmitting electrical signals during repeated rotation. Current clock spring products wind several flat cable assemblies around an internal turntable and require a traction belt or a flexible gear as a rotation auxiliary scaling mechanism to prevent the flat cable assemblies from being pulled and broken during rotation. Existing clock springs have many internal structural components, occupy a large space, are not compact enough in volume, have an insufficient rotation angle range, and need to be lubricated with grease to avoid jamming. In addition, the conductive connection between the end of the flat cable assembly and the terminal in the existing clock spring is achieved by pressing and welding with metal parts, with a cumbersome operation process and low efficiency. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the utility model provides an automobile clock spring assembly with a reasonable and simple structure.

[0004] The utility model includes a base and a housing. A turntable is located at the center of the housing. A cable moving space is formed between the outer wall of the turntable and the inner wall of the housing. A whole continuous flat cable assembly is spirally wound unidirectionally on the outer wall of the turntable. The inner end of the flat cable assembly is fixed on the turntable and electrically connected to an inner terminal, and the outer end of the flat cable assembly is fixed on the inner wall of the housing and electrically connected to an outer terminal, forming a rotatable structure with a large angle range.

[0005] The structure of the utility model is reasonable and simple. A whole continuous flat cable assembly is spirally wound unidirectionally on the outer wall of the turntable, without other auxiliary mechanisms, with fewer components, smaller occupied space, more compact volume, and can rotate smoothly without any lubricating grease inside, and can achieve a large rotation range of ±720°, ensuring reliable transmission of electrical signals during various repeated rotations.

[0006] The following further illustrates the utility model in conjunction with the drawings and specific embodiments. Brief Description of the Drawings

[0007] Figure 1 is a three-dimensional schematic diagram of the embodiment.

[0008] Figure 2 is a main sectional structural schematic diagram of the embodiment.

[0009] Figure 3 is Figure 2 the schematic diagram of the A-A sectional view of

[0010] Figure 4 is the connection structural schematic diagram of the flat cable assembly and the outer terminal.

[0011] Figure 5 It is a schematic diagram of the cooperation relationship between the steering return sleeve and the turn signal switch. Specific embodiments

[0012] As Figures 1 to 3 shown, the housing 1 is on the base 2, the turntable 3 is located at the center of the housing 1, and a cable activity space 4 is formed between the outer wall of the turntable 3 and the inner wall of the housing 1. A whole continuous flat cable 5 is spirally wound unidirectionally on the outer wall of the turntable 3. The inner end of the flat cable 5 is fixed on the turntable 3 and electrically connected to the inner terminal 6. The outer end of the flat cable 5 is fixed on the inner wall of the housing 1 and electrically connected to the outer terminal 7, forming a rotatable structure within a large angular range.

[0013] When the vehicle steering wheel rotates, the turntable 3 rotates accordingly. When rotating counterclockwise, the flat cable 5 winds tightly around the turntable 3. When rotating clockwise, the flat cable 5 loosens and adheres to the inner wall of the housing 1. The turntable 3 can rotate 720 degrees in both directions, ensuring that the flat cable 5 has sufficient travel when the steering wheel rotates.

[0014] As Figure 4 shown, the outer end of the flat cable 3 in this embodiment is welded to the wiring circuit board 8, and the outer terminal 7 is also welded to the wiring circuit board 8, and can also be covered with glue when needed. The electrical connection between the flat cable 3 and the outer terminal 7 is carried out through the wiring circuit board 8, simplifying the welding process and having high production efficiency. Similarly, the electrical connection between the flat cable 3 and the inner terminal 6 can also be like this. The inner end of the flat cable 3 is welded to the wiring circuit board 8, and the inner terminal 6 is also welded to the wiring circuit board 8 accordingly.

[0015] As Figure 5 shown, in this embodiment, a steering return sleeve 9 is fixedly connected relatively below the turntable 3. Two bosses 10 are provided at different positions on the outer wall of the steering return sleeve 9. The two bosses 10 extend out of the housing 1 and are dynamically matched with the return fork 12 of the turn signal switch 11 installed at the corresponding position, forming a turn signal return and closing control structure. When the steering wheel returns, the turntable 3 rotates together with the steering return sleeve 9, and the boss 10 touches the return fork 12 to close the turn signal switch 11. This makes the function of the clock spring more diverse and more convenient to cooperate with other steering wheel switches.

Claims

1. An automobile clock spring assembly, comprising a base and a housing, wherein a turntable is located at the center of the housing, and wherein: A cable activity space (4) is formed between the outer wall of the turntable (3) and the inner wall of the housing (1). A continuous wiring cable (5) is unidirectionally spirally wound on the outer wall of the turntable (3). The inner end of the wiring cable (5) is fixed to the turntable (3) and electrically connected to the inner wiring terminal (6). The outer end of the wiring cable (5) is fixed to the inner wall of the housing (1) and electrically connected to the outer wiring terminal (7), forming a structure that can rotate over a large angle range.

2. The automotive clock spring assembly according to claim 1, characterized in that: The inner end or the outer end of the wiring cable (5) is welded to the wiring circuit board (8), and the inner wiring terminal (6) or the outer wiring terminal (7) is also welded to the wiring circuit board (8) accordingly.

3. The automotive clock spring assembly according to claim 1 or 2, characterized in that: A steering return sleeve (9) is relatively fixedly connected below the turntable (3), and two bosses (10) are provided at different positions on the outer wall of the steering return sleeve (9). The two bosses (10) extend out of the housing (1) and dynamically cooperate with a return fork (12) of a turn signal switch (11) installed at corresponding positions to form a turn signal return closing control structure.

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